Mitsubishi Electric FR-A700 Instruction Manual page 582

Frequency/torque setting by analog input (terminals 1, 2 and 4)
The function 4mA input check is related to following functions:
Function
Minimum frequency
Multi-speed operation
Jog operation
MRS
Remote setting
Retry
Added compensation,
override function
Input filter time constant
Forward/reverse
rotation prevention
PID control
Power failure stop
Pump function
Traverse function
Switch-over
Tab. 6-114: Functions related to the 4mA input check function
6 - 402
Operation (Pr. 573 = 1)
Even if the input current decreases, minimum frequency setting clamp is valid. 6.8.1
Operation by multiple speed signal has precedence even if input current
decreases. (Frequency is not retained when the input current decreases.)
Operation stops when a multi-speed signal turns off.
The Jog signal has precedence even during decrease in input current.
(Frequency is not retained when the input current decreases.)
Operation stops when the jog signal is turned off during decrease in input cur-
rent.
PU/jog operation is enabled during PID control. At this time, PU/jog operation
has precedence during decrease in input current.
Output is shut off by the MRS signal even if input current decreases. (The
inverter stops when the MRS signal is turned off.)
The retained frequency will not change even if remote acceleration/decelera-
tion and clear are performed during decrease in input current. Reflected at
restoration.
When retry was successful at error occurrence during decrease in input cur-
rent, retained frequency was not cleared and operation continues.
Operation of added compensation (terminal 1) and override compensation
(terminal 2) are invalid during decrease in input current.
The value before filtering is detected. When input current decreases, fre-
quency after filtering (average value) is retained.
Motor rotation direction can be restricted independently of 4mA input check
setting.
Although PID operation is stopped when input current decreases, the X14 sig-
nal remains on. (PID operation is valid.)
Even if input current decreases when under voltage or power failure occurs,
the motor stops according to the setting of power-failure deceleration stop
function.
If auxiliary motor switchover conditions of pump function is satisfied even
when input current decreases, motor connection/release operation is per-
formed.
When input current decreases, traverse operation is performed using retained
frequency as reference.
When the switchover function is operated, frequency is the same as that of the
retained frequency.
Note that if 4mA input is made invalid once in switchover mode, the frequency
is not retained next time.
Parameter
Refer to
Page
6.10.1
6.10.2
6.14.2
6.10.4
6.17.1
6.20.3
6.20.4
6.21.3
6.24.1
6.16.2
6.24.7
6.22.1